Prediction: "Cartridges" will return for the Nintendo home console

[DélioPT]

I think Nintendo's plan will be: release game + DLC for a year or so.

Personally i don't mind only having one MK, Smash strategy. I think it keeps the franchises from going stale and gets people excited for the next installments.
I wouldn't mind seeing the same happen to Zelda, too.